Improvement in pile for gauging the teeth of cross-cut saws



l gaat met WILLIA'M G. TUTTLE, =OF GENEVA, YORK. Letters Patentlira-87,381, dated March 2, 1869.

IMPROVEIWENT IN FILE FOR @AUG-ING' TEE TEETH DI' CROSS-CUT SAWS.

The Schedule referred to in these Letters Patent and making part of thesama.

To all whom 'it may concern.-

invented a certain new and useful Improvement for Evening theClearing-Teeth "of Gross-Ont Saws; and I do hereby declare that thefollowing is a full and exact description thereof, reference being hadtothe accompanying drawings, making part-of this specication, inwhich-Figure l is a plan of my improvedinstrurnent.

Figure 2,. asimilar view, looking on the opposite side.

Figure 3, a cross-section, showing the application of the instrument tothe teeth of' a saw, in filing.

Like letters of reference indicate corresponding parts in all thefigures.

My improvement is specially applicable to that class of saws havingalternate cutting and clearing-teeth, the cutting-teeth being set onopposite sides to out the keit, while the clearing-teeth stand straightforward to clear it. It is necessary, in ling', that the clearing-teethbe cut down toa shorter length than the cutting ones, and to accomplishthis, my invention consists inr combining, with 'a common le, twoadjustable bars, which ride upon the points of the alternatecutting-teeth, while the file itself, which is set lower, rides upon theintermediate clearing-tooth,-aud cuts down itsj point to the rightgauge;

In the drawings- A indicates an ordinary at-le blade, and B, its

handle. Y v

I combine with this file two flat bars C G, situated respectively onopposite sides,.and parallelgwith the blade. y A

I make these bars adjustable higher or lower, rela- -tively with theblade, by any suitable means, that represented inthe drawings, beingcross-pieces D l), having sockets a a, of greater depth than the bladewhich ts therein, and connected with the blade by'screws b, b, and c,above .and below.

By turning these screws correspondingly forward or back, it willbe seenthat the bars can be set correspondingly above the plane ofthecutting-edge ofthe file, on either one side or the other.

The cutting down' or evening of the clearing-teeth g .is accomplished bysetting the file-blade A below the plane of the bars G C, as shown infig. 3, theny ling said clearing-tooth down till the smooth bars strikeon top of the points of the cutting-teeth, when the proper gauge will beattained. When this is accomplished, the cutting-teeth are filed in theusual way.

This is au extremely simple method of cutting down the clearing-teeth,and when the work is don'e, all the teeth are ofan even gauge, and,therefore, the saw is in the best condition for use. IVhen one side ofthe file is worn out, the adjustment can be reversed, and the oppositeside used.

What I claim as my invention, and desire to secure by Letters Patent,is-

.lhe combination of the adjustable bars G C with lthe leblade A, in themanner and for the purpose specified.

In combination with the above, I also claim the cross-pieces D D, andscrews b b c, in the manner and for the purpose specied.

In witness whereof, I have hereunto signed my name, in the presence oftwo subscribing witnesses.

W. G. TUTTLE.

Witnesses i R. F. Oscoon, H. S. FAIBGHILD.

